ldns, ldns-tools, drill: update to 1.6.8

[ryandesign (Ryan Carsten Schmidt)]

ldns should probably be updated to 1.6.8.

The livecheck should also be fixed; it currently doesn't work right:

$ port livecheck ldns
ldns seems to have been updated (port version: 1.6.5, new version: 1.0.1)

[marius.rieder@…]

Update patch including livecheck.

Please commit

[ryandesign (Ryan Carsten Schmidt)]

Thanks, I committed the livecheck fix for ldns in r76395 and the updates for ldns, ldns-tools and drill in r76397, except:

• I dropped the revision line entirely, because the initial revision of any given version of a port should be 0, not 1
• I added a library dependency on port:libpcap to ldns-tools, because it did link with /opt/local/lib/libpcap.A.dylib

Since ldns, ldns-tools and drill all use the same distfile, they should probably always be updated together, right? If so, we should add a note to the portfiles explaining that (like I have at the top of graphviz and graphviz-gui, for example, which are in a similar situation). This way we won't at some point forget and just update one of them.